发明名称 |
System for managing license for protecting content, server for issuing license for protecting content, and terminal for using content protected by license |
摘要 |
A license server 1 comprises: a license table for managing licenses purchased by users; a communication control section 20 for transmitting/receiving data through a communications network 3; an authentication control section 22 for performs authentication processing for a terminal 2; an encryption/decryption control section 21 for encrypting/decrypting communications with the terminal 2; an issued temporary license information table 13 for storing information on issued temporary licenses; and a return control section 24 for returning a temporary license and then deleting the information on the temporary license stored in the issued temporary license information table 13.
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申请公布号 |
US2005033967(A1) |
申请公布日期 |
2005.02.10 |
申请号 |
US20030695882 |
申请日期 |
2003.10.30 |
申请人 |
HITACHI, LTD. |
发明人 |
MORINO HARUMI;OKAYAMA MASATAKA;TANAKA AKIRA |
分类号 |
G06F12/14;G06F13/00;G06F21/00;G06F21/60;G06F21/62;G06Q10/00;G06Q30/06;G06Q50/00;G06Q50/10;H04L9/32;(IPC1-7):H04K1/00 |
主分类号 |
G06F12/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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